Which USC code gives firearm regulations?

The selection of 18 USC 921 and 922 as the correct answer is based on the fact that these sections of the United States Code directly address firearm regulations. Specifically, 18 USC 921 provides definitions relevant to firearms and defines key terms such as 'firearm' and 'ammunition.' This section lays the groundwork for understanding the broader framework of federal gun laws.

18 USC 922 outlines various prohibited acts regarding firearms, including the unlawful sale, transfer, and possession of firearms and ammunition. This section serves as a critical piece of legislation that delineates the legal rights and restrictions associated with owning and carrying firearms in the United States.

The other codes listed pertain to different areas of law. For instance, 10 USC 910 relates to the armed forces and is not concerned with civilian firearm regulations. 30 USC 1202 pertains to mining and does not address firearm issues. Similarly, 26 USC 5841 is focused on the regulation of certain weapons under the Internal Revenue Code, but it is not as comprehensive in discussing general firearm regulations as 18 USC 921 and 922. Therefore, 18 USC 921 and 922 is the appropriate choice when referencing firearm regulations in the U.S. legal context.